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公开(公告)号：US20160181966A1
公开(公告)日：2016-06-23
申请号：US15059091
申请日：2016-03-02
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Marcos A. Donolo , Angelo D'Aversa , Subhash C. Patel , Vinod K. Yedidi , Jianchun Qin
CPC classification number: H02P29/60 , G01R19/175 , G01R19/2513 , G01R31/343 , H02H7/0805
Abstract: Monitoring thermal conditions of an electric motor using current signals from power supplied to the motor is disclosed herein. The current signals may be used to calculate composite current values which may be used to calculate slip. The slip may be used to provide thermal monitoring and protection to the electric motor. Slip may be calculated using only values from the stator of the electric motor for providing thermal monitoring and protection to electric motors where rotor measurements are not available.
Abstract translation: 这里公开了使用供给电动机的电力的电流信号来监视电动机的热条件。 电流信号可用于计算可用于计算滑差的复合电流值。 滑块可用于为电动机提供热监测和保护。 可以仅使用来自电动机的定子的值来计算滑差，以便对没有转子测量的电动机提供热监测和保护。
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公开(公告)号：US11218103B2
公开(公告)日：2022-01-04
申请号：US17066860
申请日：2020-10-09
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Marcos A. Donolo , Jay Hartshorn , Subhash C. Patel , Vinod K. Yedidi , Jianchun Qin
Abstract: An intelligent electronic device (IED) according to the present disclosure can estimate a full load rotor resistance value as a function of motor positive-sequence resistance. The IED may estimate the full load rotor resistance value by measuring zero-crossings of voltage after a motor disconnect. The IED may also acquire motor current and voltage measurements and calculate motor slip using the acquired motor current and voltage measurements and the estimated full load rotor resistance value.
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公开(公告)号：US20210111653A1
公开(公告)日：2021-04-15
申请号：US17066860
申请日：2020-10-09
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Marcos A. Donolo , Jay Hartshorn , Subhash C. Patel , Vinod K. Yedidi , Jianchun Qin
Abstract: An intelligent electronic device (IED) according to the present disclosure can estimate a full load rotor resistance value as a function of motor positive-sequence resistance. The IED may estimate the full load rotor resistance value by measuring zero-crossings of voltage after a motor disconnect. The IED may also acquire motor current and voltage measurements and calculate motor slip using the acquired motor current and voltage measurements and the estimated full load rotor resistance value.
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公开(公告)号：US09917545B2
公开(公告)日：2018-03-13
申请号：US15059091
申请日：2016-03-02
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Marcos A. Donolo , Angelo D'Aversa , Subhash C. Patel , Vinod K. Yedidi , Jianchun Qin
CPC classification number: H02P29/60 , G01R19/175 , G01R19/2513 , G01R31/343 , H02H7/0805
Abstract: Monitoring thermal conditions of an electric motor using current signals from power supplied to the motor is disclosed herein. The current signals may be used to calculate composite current values which may be used to calculate slip. The slip may be used to provide thermal monitoring and protection to the electric motor. Slip may be calculated using only values from the stator of the electric motor for providing thermal monitoring and protection to electric motors where rotor measurements are not available.
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